Causes of Lower Back and Pelvic Pain

Yes, you can get pregnant after your last menstrual period on 16 Jan if you had an intercourse on 8 Feb, the chances of which largely depend on the timing of the ovulation and menstrual cycle regularity. If you have any worries about pregnancy or reproductive health, then please see the gynecologist for an examination and tips.
 

It is completely natural to be concerned about a late period, even after having your tubes tied. Here’s the thing though – not having a period can occur for many reasons besides being pregnant. Stress hormones changing up or certain drugs could all cause your menstrual cycle to go off kilter. Taking a test can help ease any worries so if this is something that is worrying you then go ahead and do it. 

Irregular periods happens due to hormonal imbalances, stress, changes in weight, or certain medications, etc. Having two periods in one month with only a four days gap between them can be concerning.. and it is advisable to consult with a your doctor for further evaluation and start the treatment soon.

The size of a 12-week-old fetus's head typically measures around 2 cm during a scan. The infant's head undergoes rapid development during this stage, and these measurements are crucial for assessing their growth. If there are no concerning symptoms, this size is generally within the normal range. Nevertheless, it's important to continue attending regular check-ups and follow your doctor's advice to ensure that the pregnancy is progressing well.

The result you provided, 2622.43 mlU/ml, indicates a positive pregnancy test. HCG levels vary among individuals and throughout the stages of pregnancy, but a level of 2622.43 mlU/ml is consistent with a positive pregnancy result, indicating that your wife is likely pregnant.