Can fibroids cause pain in 8-week pregnancy?

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.
 

One of the most common side-effects caused by taking emergency contraceptive pills like Unwanted 72 is bleeding. It may change your menstrual cycle, either early or late period. But if the bleeding lasts longer or is more severe than normal, it might be necessary to see a gynecologist for an additional evaluation and therapy.

A woman could be pregnant if she gets a menstrual cycle after having sex for 11 days, but other times, this is not the reason behind it. You can see cramps in this regard or some bleeding that is not typical of a period. This may be due to the changes in your hormones, or there may be other issues that have lead to this. To diagnose the situation, it's advisable to take the pregnancy test a few weeks after the last time you had sex. Although it's not necessary to have periods after 11 days each month of the sexual act, it does occur sometimes, but it's not always indicative of pregnancy.