Getting early periods is a very common problem. Vigorous exercise, Stress, Variations in weight etc.. can result in early periods. Nausea and cramps are usually present during periods . Don't worry about that.
Next Steps
If you have severe cramps you can take Tablet Meftal Spas -1 No, Single dose.
Health Tips
You will conceive in due course. The symptoms you have mentioned are very much physiological.