Sick Or ?

I have felt really sick for about a week now . I wake up feeling sick . I go to sleep feeling sick . & I have almost this weird feeling in my stomach . Its not always nausea but like I'm bloated but it hurts . I cant really explain it . I haven't thrown up . (Tmi I'm sorry) . I have been haveing cramping like pain in my lower stomach . I haven't had AF in a while . My periods are very irregular . Never know when to test to see if I'm pregnant either . Whenever i do test it always come back neg. Has anyone felt like this ? What was the reason ? Were you pregnant ? Or was it something else ? Help Please 😫