Hi sadiqa786, your periods are not heavy and the flow you have described may be normal. The pains that you experience could be due to varied reasons most commonly may be due to polycystic ovary disease, pelvic inflammatory disease
or no explained cause. As you are also trying to concieve it would be best to visit a gynecologist and get yourself evaluated for the same and during the course of investigation they will be able to find any cause for dysmenhorria(pain ful periods) if any. In the meanwhile you could start doing some exercise or yoga
to keep yourself fit and to lose weight if you are overweight
. Yoga helps in releiving cramps and helps in decreasing pain during periods
. Take care!