I think you'll need to get off from both Wellbutrin and Low-Ogestrel.
It is well known that antidepressants cause constipation as a side effect, and it is same with wellbutrin.
Many of your symptoms can be explained like side effects of Ogestrel.
It can cause nausea, vomiting, bloating,abdominal cramps, increased hair growth, loss of scalp hair, changes in weight or appetite, nervousness, dizziness, tired feeling.
Feeling depressed or experiencing worse depressive symptoms, is serious side effect of Ogestrel.
If all of your symptoms aren't side effect of drugs, you may be checked for Irritable bowel syndrome, hypothyroidism, and PCOS (polycystic ovary syndrome)
Women with PCOS have the following symptoms:
irregular menstrual periods, excessive and increased body hair, oily skin, hair loss with thin hair, increased weight, depression.