Вызывает ли беспокойство объемный яичник с кистой? Размер кисты?

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.
 

Let's discuss pregnancy symptoms and period symptoms. Symptoms of being pregnant may range from feeling sick to the stomach, being very tired, having sore breasts, and missing your monthly menstrual cycle. Cramps, bloating, and mood changes are all signs that a woman is about to get her period. This occurs due to hormonal changes in her body. You can use a hot water bottle or try drinking more fluids if you find it hard to deal with these symptoms.

Yes! Pregnancy can be possible after having a period. In some cases, ovulation is rather quicker than usual which could account for the cycle being shorter than normal. If you've had unprotected intimate contact after your period, typical symptoms of pregnancy such as nausea, breast tenderness, or fatigue may point to the possibility of being pregnant. You can be sure of this with a simple urine test.