Hi doctor 3 month ago I do sex with my boyfriend but he wear condom. My periods is reqular coming and I have no any bleeding and no nausea. But I feel pain in my belly and I feel vomiting and headache. And in belly I feel gurgle like sound what is this??

1) No sex for 3 months
2) Regular periods
= probably NOT pregnant. There is a very very rare chance of pregnancy, because a few women do have a first period, and even fewer have more than one.

You probably have a stomach virus, a flu, or any number of other things.

Yes no sex and have regular periods... but feeling vomiting sometimes and feel belly pain in lower side of belly pain... and having with bad taste belch

Stomach virus, flu, ulcers, or a number of things.

If no sex for 3 months, and regular periods, pregnancy would have been last thing on my list to consider.

I would consider the last things you ate, or a virus before pregnancy.

Where exactly is the belly pain? (Above or below navel, left or right side?)

Could be many things as said, and two more are gallbladder blockage/inflammation, or appendix.

Bellow navel... feel sometimes pain no regular pain

Below navel is still not specific enough. How far below, how far right or left.

Below belly button every where pain travel and hear sound like gor gor

No way to tell from what you write - but it certainly sounds like digestive problems. Belching bad taste + gurgling sounds in your lower abdomen could be anything from a stomach virus to an infected or blocked gallbladder. If the taste in your mouth is VERY bitter, that can be bile, which is secreted by the gallbladder.

Anyway, I am only guessing, and you really will have to see a doctor for tests.