Not in the way you mean. FMLA allows you with up to 12 weeks of protected leave per 12 month period. Not 12 weeks per occurance, 12 weeks period. Your post suggests that there was a previous period of FMLA. If that and the time between July 30 and now comes to 12 weeks, then your employer is legally entitled to suspend or even terminate you. On week 13, day 1, you have no further job protection no matter how legitimate the need for additional leave and no matter how many doctors you are seeing.
On the other hand, if you have taken less than 12 weeks of FMLA in 12 months and you are still not medically cleared to return to work, then your employer may not legally discipline you for an absence that is related to the FMLA-protected condition.
On second reading, I think I see an additional issue. You don't get to just call the employer and say, Hi, I"m seeing a doctor for such and such a condition and I'm taking FMLA, goodbye. Your doctor has to certify the medical condition. If your doctor has released you to work, then you have to supply new medical paperwork from your doctor; you can't just call and announce that you are now on FMLA.