Should I just get catastrophic?

27 y/o Male, living in MA, missed Masshealth deadline. Family stuff causing a transitional period so low income but a decent sized nest egg. Haven't been to the Doctor in quite awhile so kinda wanna go in just for a checkup / tetanus shots or whatever I'm behind on. Other than that just wanna be covered in case of something extreme like Lyme / Cancer. Looking on healthcare.gov the cheapest plan is ~210 / month 'catastrophic' coverage, would this fit my needs or should I get something like ~$330 / month 'gold' coverage. Any help appreciated, no idea what I'm doing.