What Causes Bloating And Nausea After Stopping Mercilon Intake?

Hi! Decided to stop taking Mercilon in January after being on in for 10 yrs. Had a period in Feb (quite light) and again 4 weeks later in March but nothing since - have noticed feel bloated and have some nausea sometimes, have been sexually active in this time - ?pregnant or normal for after stopping mercilon?